JP2007122105A - Image display device and image display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device and an image display method for achieving proper image display under the consideration of the visual field range of an observer. <P>SOLUTION: An image display device 100 displays an image to be provided to an observer 300. A controller 130 detects the location of the observer 300 based on sensor information from a sensor 110 mounted on the observer 300, and detects the location of a presenter 400 based on the sensor information from a sensor 120 mounted on the presenter 400. Then, the controller 130 derives the visual field range of the observer 300 based on the location information of the observer 300 and the location information of the presenter 400. Furthermore, the controller 130 derives the display position of an image to be displayed on a screen 150 by a projector 140 so that the image can be included in the visual field range of the observer 300. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display device and an image display method for displaying an image provided to an observer.

Conventionally, in a presentation, a method of projecting a document (slide) image created using presentation software of a personal computer (PC) by a projector is often used. In recent years, there are also a system that changes the design of fonts and colors of characters in an image (see Patent Document 1) and a system that uses a plurality of screens (see Patent Document 2). By changing the design of the image, it is possible to clearly provide information that the audience of the presentation wants to pay attention to. Moreover, various information can be provided simultaneously by using a plurality of screens. These systems are all intended for presentations that are easy for the listener to understand.
JP 2003-271276 A JP 2003-323166 A

  By the way, the listener of the presentation as an observer is not only looking at the image provided to the general public but also looking at the presenter who is giving the presentation. This is because the listener wants to understand the contents of the presentation more deeply by observing the facial expressions and gestures of the presenter.

  However, Patent Document 1 is based on the premise that the object to which the listener is turning his / her gaze is a screen, and does not consider that the listener turns his / her gaze toward the presenter. For this reason, even if the design of the image is changed, if the listener's line of sight is facing the presenter of the presentation, the listener may miss an image that changes as the presentation progresses. In particular, when the distance between the screen and the presenter of the presentation is large, the range of the line of sight is widened, so the listener needs to frequently switch the direction of the line of sight between the screen and the presenter, and a large line of sight movement Is required. Such frequent large gaze movements not only impose a burden on the listener but also hinder understanding of the content of the presentation. In Patent Document 2, a large amount of information is provided to the listener on a plurality of screens. However, as in Patent Document 1, it is not considered that the listener looks at the presenter. The movement of the line of sight may interfere with the understanding of the content of the presentation by the listener.

Therefore, in order for the listener to fully understand the contents of the presentation, not only to change the screen design and increase the amount of information using multiple screens, It is desirable that the system be capable of paying sufficient attention.
The present invention has been made in view of the above problems, and an object thereof is to provide an image display device and an image display method capable of displaying an appropriate image in consideration of the visual field range of an observer.

  The image display device of the present invention displays an image to be provided to an observer, and is based on a visual field range deriving unit that derives the visual field range of the observer, and a visual field range derived by the visual field range deriving unit. Display control means for displaying the image.

  With this configuration, an image can be displayed in consideration of the visual field range of the observer, and the image can be displayed so as to be included in the visual field range of the observer.

  Further, in the image display device of the present invention, the visual field range deriving unit detects the position of the presenter who performs the presentation using the image, and the observer position detecting unit that detects the position of the observer. Detecting means for deriving a visual field range of the observer based on the position of the observer and the position of the presenter.

  With this configuration, it is possible to derive an appropriate visual field range according to the observer generally directing his gaze to the presenter as well as the image in a presentation or the like.

  In the image display device of the present invention, the visual field range deriving unit derives a visual field range including the position of the presenter.

  With this configuration, both the presenter and the image can be included in the visual field range of the observer, and the observer's line-of-sight movement can be minimized.

  In the image display device of the present invention, the visual field range deriving unit derives a visual field range corresponding to a preset visual field angle.

  With this configuration, the visual field range can be easily derived.

  In the image display device of the present invention, the display control means includes display position deriving means for deriving a display position based on the visual field range, and displays the image at the display position.

  With this configuration, an image can be displayed at an appropriate display position corresponding to the visual field range.

  Further, in the image display device of the present invention, the display position deriving unit is further configured to be viewed from the observer based on the position of the observer and the position of the presenter who makes a presentation using the image. A position that does not overlap with the presenter is derived as the display position.

  With this configuration, both the presenter and the image can be included in the observer's visual field range without overlapping.

  In the image display device of the present invention, the display control unit includes an enlargement / reduction unit that performs the enlargement / reduction process of the image based on the visual field range derived by the visual field range deriving unit.

  With this configuration, an image can be displayed in an appropriate size that is easier to view while being included in the visual field range of the observer.

  The image display apparatus of the present invention further includes an image output unit that outputs an image in accordance with the control of the display control unit.

  The image display method of the present invention is an image display method for displaying an image to be provided to an observer, and is derived by a visual field range deriving step for deriving the visual field range of the observer and the visual field range deriving step. And a display control step of displaying the image based on the field of view range.

  With this configuration, an image can be displayed in consideration of the visual field range of the observer, and the image can be displayed so as to be included in the visual field range of the observer.

  Further, in the image display method of the present invention, the visual field range derivation step includes an observer position detection step for detecting the position of the observer, and a presenter position for detecting a position of a presenter who makes a presentation using the image. And detecting a viewing range of the observer based on the position of the observer and the position of the presenter.

  With this configuration, it is possible to derive an appropriate visual field range according to the observer generally directing his gaze to the presenter as well as the image in a presentation or the like.

  In the image display method of the present invention, the visual field range deriving unit derives a visual field range including the position of the presenter.

  With this configuration, both the presenter and the image can be included in the visual field range of the observer, and the observer's line-of-sight movement can be minimized.

  In the image display method of the present invention, the display control step includes a display position deriving step for deriving a display position of the image based on the visual field range, and the image is displayed at the display position of the image. .

  With this configuration, an image can be displayed at an appropriate display position corresponding to the visual field range.

  In the image display method of the present invention, the display control step includes an enlargement / reduction step for performing enlargement / reduction processing of the image based on the visual field range detected by the visual field range derivation step.

  With this configuration, an image can be displayed in an appropriate size that is easier to view while being included in the visual field range of the observer.

  ADVANTAGE OF THE INVENTION According to this invention, the appropriate image display which considered the observer's visual field range is attained.

  Hereinafter, an image display device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a hardware configuration of an image display apparatus according to the present invention. An image display apparatus 100 shown in FIG. 1 displays an image when a presenter 400 makes a presentation using an image to an observer 300 who is a listener in a presentation performed in a conference room or the like. is there. The image display apparatus 100 includes sensors 110 and 120, a controller 130, a projector 140, and a screen 150.

  The sensor 110 is attached to the observer 300. The sensor 110 is, for example, a spatial position sensor, and detects various sensor information (for example, coordinate information in a three-dimensional space) necessary for detecting the position of the observer 300 and outputs the detected sensor information to the controller 130. The sensor 120 is attached to the presenter 400. Similar to the sensor 110, the sensor 120 is a spatial position sensor using, for example, magnetism, and detects various sensor information necessary for detecting the position of the presenter 400 and outputs the detected sensor information to the controller 130.

  The controller 130 acquires various sensor information from the sensors 110 and 120 described above, and controls image output by the projector 140 so that both the presenter 400 and the image are included in the visual field range of the observer 300. .

  FIG. 2 is a functional block diagram of the controller 130. The controller 130 shown in FIG. 2 includes a visual field range deriving unit 210 that derives the visual field range of the viewer 300, a display control unit 220 that controls image display, and an image output unit 230 that outputs image data. Among these, the visual field range deriving unit 210 includes an observer position detecting unit 212 that detects the position of the observer 300 and a presenter position detecting unit 214 that detects the position of the presenter 400. In addition, the display control unit 220 includes a display position deriving unit 222 that derives an image display position in the conference room, and an enlargement / reduction unit 224 that performs enlargement / reduction processing of an image to be displayed. Detailed operation of the controller 130 will be described later.

  Again, returning to FIG. The projector 140 displays an image at a predetermined position within the field of view of the viewer 300 on the screen 150 according to the control of the controller 130.

  Next, the operation of the controller 130 will be described with reference to a flowchart. FIG. 3 is a flowchart showing the operation of the controller 130. The observer position detector 212 in the visual field range detector 210 in the controller 130 detects the position of the observer 300 based on the sensor information from the sensor 110 attached to the observer 300 (S101).

  Specifically, when there is only one observer 300, the observer position detection unit 212 determines the position of the observer 300 based on the sensor information from the sensor 110 attached to the observer 300. To detect. Further, when there are a plurality of observers 300, the observer position detection unit 212 is based on sensor information from the sensor 110 attached to the representative of the observers 300. Detect position. Or the observer position detection part 212 detects the position of each observer 300 based on the sensor information from the sensor 110 with which each of the several observer 300 was mounted | worn, and grasps | ascertains the distribution of the observer 300. At the same time, the position of the center of gravity of the distribution is detected as the position of the observer 300. The position detection of the observer 300 is not limited to these methods, and various methods are conceivable.

  Further, the presenter position detection unit 214 in the visual field range detection unit 210 detects the position of the presenter 400 based on the sensor information from the sensor 120 attached to the presenter 400 (S102).

  When the positions of the viewer 300 and the presenter 400 are detected in this way, the visual field range deriving unit 210 then moves the viewer based on the position information of the viewer 300 and the position information of the presenter 400. A field-of-view range of 300 is derived (S103).

  Specifically, the visual field range deriving unit 210 derives, as the visual field range, a region having a predetermined angle in the horizontal direction including the position of the presenter 400 around the position of the viewer 300. The human visual field range is usually an area of about 200 degrees in the horizontal direction. However, it is more preferable that the visual field range is an area of about 80 degrees in the horizontal direction corresponding to the gaze stable visual field angle, which is within the range where the gaze can be reasonably observed, according to the discrimination ability and the degree of attention. In this case, as shown in FIG. 4, the visual field range deriving unit 210 has an area of about 80 degrees in the horizontal direction corresponding to the gaze stable visual field angle including the position of the presenter 400 with the viewer 300 as the center. Derived as 300 fields of view. In addition, the visual field range deriving unit 210 may set an area of 30 degrees in the horizontal direction, which is called an effective visual field, where the viewer's 300 attention is directed more strongly as the visual field range. Note that the viewing angle of the viewer 300 may be set as it is by the user. The visual field range deriving unit 210 outputs the derived information about the visual field range of the viewer 300, the position of the viewer 300, and the position of the presenter 400 to the display control unit 220.

  The display position deriving unit 222 in the display control unit 220 is based on the visual field range of the viewer 300 derived by the visual field range deriving unit 210 so that the image to be displayed is included in the visual field range of the viewer 300. The display position of the image is derived (S104). At this time, the display position deriving unit 222 determines, based on the position of the viewer 300 and the position of the presenter 400, a position where the presenter 400 and the image do not overlap with each other as viewed from the viewer 300 as the display position of the image. To do.

  Furthermore, the enlargement / reduction unit 224 performs enlargement / reduction processing of the image based on the visual field range of the viewer 300 so that the entire image is included in the visual field range of the viewer 300 (S105). If the initial display magnification is appropriate, the image enlargement / reduction processing is not performed. The derived image display position and display magnification are output to the image output unit 230.

  Next, the image output unit 230 outputs an image to the projector 140 (S106). Specifically, the image output unit 230 outputs image data itself such as JPEG (Joint Photographic Experts Group), and information on the display position and display magnification of the image. The projector 140 sets the display position based on the information on the display position of the image, sets the display magnification based on the information on the display magnification, and displays an image based on the image data on the screen 150.

  As a result, as shown in FIG. 5, the presenter 400 and the image 500 including the two images 501 and 502 do not overlap each other when viewed from the viewer 300 within the visual field range of the viewer 300. 500 is displayed.

  As described above, the controller 130 in the image display device 100 detects the position of the observer 300 based on the sensor information from the sensor 110 attached to the observer 300, and the sensor 120 attached to the presenter 400. The presenter 400 detects the position of the presenter 400 based on the sensor information and derives the visual field range of the viewer 300 based on the position information of the presenter 300 and the position information of the presenter 400. Furthermore, the controller 130 is configured so that the image displayed on the screen 150 by the projector 140 is included in the visual field range including the presenter 400 in the viewer 300, and the presenter 400 and the image viewed from the viewer 300. The display position of the image is derived and enlarged / reduced so that the images do not overlap. Accordingly, the viewer 300 can sufficiently pay attention to both the presenter 400 and the image 500 with only a small line of sight movement, and the understanding of the contents is not hindered.

  By the way, the operation of the flowchart shown in FIG. 3 is repeated periodically. As shown in FIG. 6, when the viewer's 400 changes the visual field range due to the movement of the presenter 400 and an image 502 that is a part of the image 500 deviates from the visual field range, Only the image 501 exists in. For this reason, when a presentation using the image 501 and the image 502 is performed, the observer 300 must frequently perform a large line of sight movement, and pay sufficient attention to both the presenter 400 and the image 500. It becomes difficult to understand the contents without being able to.

  However, by periodically repeating the operation of the flowchart shown in FIG. 3, even if the presenter 400 moves, the display position and display magnification of the image 500 are adjusted, and the image is again within the field of view of the observer 300. The display is performed so that 500 is included.

  In the embodiment described above, in FIG. 3, the position of the presenter 400 is detected (S102) after the position of the observer 300 is detected (S101), but the observation is performed after the position of the presenter 400 is detected. The position of the person 300 may be detected. In FIG. 3, the image size adjustment (S105) is performed after the image display position is derived (S104). However, the image display position may be derived after the image size adjustment. Only one of the derivation of the image display position and the adjustment of the image size may be performed.

  As described above, the image display device and the image display method according to the present invention can display an appropriate image in consideration of the visual field range of the observer, and are useful as an image display device and an image display method.

It is a figure which shows the hardware constitutions of an image display apparatus. It is a functional block diagram of a controller. It is a flowchart which shows operation | movement of a controller. It is a figure which shows an example of a visual field range. It is a figure which shows the 1st example of an image display. It is a figure which shows the 2nd example of an image display.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Image display apparatus 110,120 Sensor 130 Controller 140 Projector 150 Screen 210 Field-of-view range derivation part 212 Viewer position detection part 214 Presenter position detection part 220 Display control part 222 Display position derivation part 224 Enlargement / reduction part 230 Image output part 300 Observation 400 Presenter 500, 501, 502 images

Claims (13)

An image display device for displaying an image to be provided to an observer,
Visual field range deriving means for deriving the visual field range of the observer;
An image display apparatus comprising: display control means for displaying the image based on the visual field range derived by the visual field range deriving means. The visual field range deriving means includes:
Observer position detecting means for detecting the position of the observer;
Presenter position detecting means for detecting the position of a presenter who makes a presentation using the image,
The image display apparatus according to claim 1, wherein the visual field range of the observer is derived based on the position of the observer and the position of the presenter. The image display apparatus according to claim 2, wherein the visual field range deriving unit derives a visual field range including a position of the presenter. The image display apparatus according to claim 1, wherein the visual field range deriving unit derives a visual field range corresponding to a preset visual field angle. The display control means includes display position deriving means for deriving a display position based on the visual field range,
The image display apparatus according to claim 1, wherein the image is displayed at the display position. The display position deriving means further includes, based on the position of the observer and the position of the presenter who makes a presentation using the image, a position that does not overlap the presenter when viewed from the observer. The image display device according to claim 5, wherein the image display device is derived as follows. 7. The display control unit according to claim 1, further comprising an enlarging / reducing unit that performs enlargement / reduction processing of the image based on the visual field range derived by the visual field range deriving unit. Image display device. 8. The image display apparatus according to claim 1, further comprising an image output unit that outputs an image in accordance with control of the display control unit. An image display method for displaying an image to be provided to an observer,
A visual field range deriving step for deriving the visual field range of the observer;
And a display control step of displaying the image based on the visual field range derived by the visual field range deriving step. The visual field range deriving step includes:
An observer position detecting step for detecting the position of the observer;
A presenter position detecting step for detecting a position of a presenter who makes a presentation using the image,
The image display method according to claim 9, wherein the visual field range of the observer is derived based on the position of the observer and the position of the presenter. The image display method according to claim 10, wherein the visual field range deriving step derives a visual field range including a position of the presenter. The display control step includes a display position deriving step for deriving a display position of the image based on the visual field range,
The image display method according to claim 9, wherein the image is displayed at a display position of the image. 13. The display control step includes an enlargement / reduction step of performing enlargement / reduction processing of the image based on the visual field range detected by the visual field range deriving step. Image display method.

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